Liquid crystal composition and display element using the same

Details Liquid crystal composition and display element using the same Liquid crystal composition and display element using the same

1989-08-03

1991-04-09

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing pleochroic dye

25229901, 25229961, 25229963, C09K 1932, C09K 1916, C09K 1911

Patent

active

050062760

ABSTRACT:
##STR1## A liquid crystal composition and a display element using the same are disclosed. The composition contains at least one dichroic dye represented by general formula (I), at least one dichroic dye represented by general formula (II), and at least one dichroic dye represented by general formula (III). In formula (I), R1 to R3 each represent a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group or a halogen atom; and A represents (a); in formula (II), R4 and R5 each represents a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group or a halogen atom; in formula (III), R6 represents a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group or a halogen atom. R7 represents a hydrogen atom or (b), and R8 represents a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl, an alkoxy group or a halogen atom.

REFERENCES:
patent: 4495083 (1985-01-01), Imazeki et al.
patent: 4507221 (1985-03-01), Imazeki et al.
patent: 4863634 (1989-09-01), Clausen et al.
Japanese Abstract, 87-120106/17, 87-120104/17.

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